What is psilocin?

Psilocin is the counterpart to psilocybin, and while it exists in small quantities inside dried specimens of Psilocybe cubensis, it is a chemical reaction inside the body that converts most of the psilocybin into psilocin. It’s psilocin’s strong affinity for serotonin receptors that produces the mind-altering effects magic mushrooms and magic truffles are known for.